It was basically a website that kind of aggregated information from SmashBoards. There would be a post on the main page every week or so that would discuss the daily dojo posts from Sakurai, and also any other rumors and leaks type stuff. I remember distinctly there was a post that said "35 character roster leak is true!" but I can't remember the name of the website. Anyone know? It was a pretty popular website at the time so I feel like I'm not completely shooting in the dark.

EDIT: THANK YOU MASTEROFKNEES. Nostalgia itch has been scratched. Too bad you can't see any of the old formatting on the wayback machine. Here's the inital reaction to the Brawl roster being confirmed true for anyone who remembers those days:

35 Character Roster is True!

Spoiler Free Info, With Links To Spoiler SSE Pics

Confirmed Unlockable Playable Characters:

ROB (listed as "Robot" on the select screen, has his own icon)

Falco

Game and Watch

Ganondorf

Lucario

Toon Link (NO!!!) - "The swordsman that sailed the seas, Toon Link joins the battle"

Jigglypuff

Ness

Captain Falcon

Luigi

Marth

Sonic

Snake

The 35 character roster is turning out to be completely true, except for Wolf.

Ganondorf does NOT have a sword. We haven't seen his moves yet, but let's hope he's not a clone still.

Ganondorf's FS is Ganon (TP form)

Game and Watch's FS is a giant squid of some sort.

Captain Falcon's Final Smash is the Blue Falcon

Ness's FS = Lucas's FS

Falco's FS = Fox's FS

Ridley is confirmed as a boss, and not playable.